A cryogenic environment for microfabricated surface ion traps

Presenting Author: Christopher G. Yale, Sandia National Laboratories
Contributing Author(s): Craig W. Hogle, Melissa C. Revelle, and Peter Maunz

Trapped ions are a promising system to realize quantum information processing due to their indistinguishability and high degree of interconnectivity. Microfabricated surface electrode traps offer a route to scalability, but the fidelity of gate operations is limited by anomalous heating rates. Also, ion chain lifetimes in room temperature chambers are hampered by background collisions. Here, we investigate the performance of Sandia’s High-Optical-Access surface electrode trap in a cryogenic environment. We present the design of the cryogenic chamber with an internal toroidal circuit board RF resonator [1] to create the trapping potential. In addition, we demonstrate ablation loading of ions [2] to avoid thermal shifts created by a thermal loading oven. Finally, we measure preliminary heating rates and background gas collision rates by observing jumps in a double well potential. SNL is managed and operated by NTESS, LLC, a subsidiary of Honeywell International, Inc., for the U.S. Dept. of Energy’s (DOE) National Nuclear Security Administration under contract DE-NA0003525. This research was funded by the Intelligence Advanced Research Projects Activity (IARPA) and by the DOE Office of Advanced Scientific Computing Research Quantum Testbed Program. The views expressed here do not necessarily represent the views of the DOE, IARPA, or the U.S. Government. 1. M. F. Brandl, et al., Appl. Phys. B. 122, 157 (2016) 2. R. J. Hendricks, et al., Appl. Phys. B. 88, 507 (2007)

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